Toothbrush



FIG. 1 is a rear elevation view of my new design for a toothbrush;

FIG. 2 is a left side elevation view thereof, the right side being a mirror image thereof;

FIG. 3 is front elevation view thereof;

FIG. 4 is a rear elevation view of an alternate embodiment, with the shading designating tonal contrast;

FIG. 5 is a left side elevation view thereof, the right side being a mirror image thereof; and,

FIG. 6 is a front elevation view thereof. 

CLAIM The ornamental design for a toothbrush, as shown and described. 